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Dual-Loop Photosensor, WET Location

GLA-LDL-PC-0-10-WL-W

Dual photosensor for open- and closed-loop applications. Measures the ambient light level from all light sources source. Versatile flush or surface ceiling mounting.

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Key Features

  • Ceiling-mount photosensor
  • Used in both open-loop and closed-loop applications
  • Measures the ambient light level from all light sources
  • 60° cone of coverage for open-loop and closed loop applications
  • Suitable for indoor, outdoor, and wet locations
  • Closed-loop light sensitivity ranging from 3-300 fc
  • Open-loop light sensitivity with three ranges: 3-300 fc, 30-3000 fc, and 60-6000 fc
  • 0 to 10 VDC analog control output
  • Versatile flush or surface mounting
  • Control system interface via Cresnet® network or analog input1

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Product Overview

The GLA‑LDL‑PC‑0‑10-WL is a dual-loop photosensor that continually measuresambient light, achieving the optimal balance of natural and artificial lightingin daylight harvesting applications. By harnessing natural daylight fromwindows and skylights, electrical lighting can be dimmed, reducing energy usagewhile maintaining a consistent light level for a more efficient work or livingspace. With an IP54 rating, the GLA‑LDL‑PC‑0‑10-WL is suitable for indoor,outdoor and wet location applications.

In closed-loop daylight harvesting applications,the GLA‑LDL‑PC‑0‑10-WL can be ceiling mounted directly above the primary workarea. It measures all light within a 60° cone, which consists predominately ofreflected light, acquiring the most natural approximation of changes in ambientlight levels.

In open-loop daylight harvestingapplications, the GLA‑LDL‑PC‑0‑10-WL can be ceiling mounted near a window or inthe light well of a skylight. It can be directed toward incoming daylight andaway from electrical lighting fixtures. The control system estimates theambient lighting in the room according to the light level measured by thephotocell.

The GLA‑LDL‑PC‑0‑10-WL includes hardwareto facilitate flush or surface mounting to a drywall or drop-tile surface. Itssimple 3-wire interface allows for direct connection to a Crestron® controlsystem via a single Versiport I/O or analog input port, with 24V power takenfrom the Cresnet® network control bus.1

Using an optional sensor integration module (GLS‑SIM or ZUMMESH‑JBOX‑SIM for a Zūm® J-Box, both sold separately), the GLA‑LDL‑PC‑0‑10-WL becomes a full-featured Cresnet device, streamlining the total lighting system. Cresnet provides a simple solution for configuring and wiring sensors as part of any complete Crestron system. The Cresnet bus is the communications backbone for many Crestron keypads, lighting controllers, shade motors, sensors, and other devices.


  1. Cresnet communications requires a GLS‑SIM or ZUMMESH‑JBOX‑SIM (both are sold separately). Power may be taken from Cresnet bus regardless of interface method. Connects to a GLS‑SIM, ZUMMESH‑JBOX‑SIM, Versiport I/O, or Analog Input control port on any Crestron control system.
  2. Recommended wire size: 18 AWG.


Product Specs

Sensing
Field of view: 60 degree cone
Light sensitivity: CL: 3-300 fc; OL: 3-6000 fc
Center axis CL: 90; OL: 45 

Controls and Connections
Light sensitivity slider: 1: OL: 3-300 fc (factory setting); 2: OL: 30-3000 fc; 3: OL: 60-6000 fc; 4: CL: 3-300 fc
Input 2:(1) Red flying lead; 24 VDC power input
Ground 2: (1) Black flying lead
Output 1, 2: (1) Orange flying lead; Light level control signal output; Provides 0-10 V analog control signal proportionate to the ambient light level; Connects to a Crestron sensor integration module (GLS-SIM or ZUMMESH-JBOX-SIM, sold separately) or to a Versiport I/O or Analog Input control port on any Crestron control system

Power Requirements
Current Consumption: 2 mA class 2 at 24 VDC
Cresnet Power Usage: ~.1 W1

Environmental
Temperature: 32F to 122F (0C to 50C)
For indoor, outdoor and wet locations.

Housing
Construction: High-impact injection-molded plastic, white
Mounting: Surface or flush ceiling mount directly to drywall or drop-tile

Dimensions
Height: 1.06 in. (27 mm)
Diameter: 2.01 in. (51 mm)

Weight
0.011 lb (.05 kg)

Compliance
UL Listed

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